Carpet-sweeper.



l T o all whom it may concern:

i Unirse sfrirrnsi1ramrrrorties.

S'QLEPELENA.` Davis, or` NEW-Arta, .NEw'rJEEsEr AssieNoE ro NarioN/AncswEEPEii. y COMPANY, or NEWARK, :NEW JEEsEYyA CORPORATION or NEW JERSEY.

CARPET-SWEEEER. i

Specification of Letters Patent.

Patenteuivov. 2c, wie.

Application iiled May 27',` 1309. Serial No. 498,652. i

Be it known that I, STEPHEN A. DAvis, of No. 154 Roseville avenue, in the city of Newark, county of Essex. and State of New Jersey, a citizen of the United States, have made .a certain new and useful Improvement in Carpet-Sweepers, of which the following is a specication.

My invention relates to carpet sweepers,

and among its objects are the provision of a simplified device of this character which will be effectual in operation and simple in construction, and in which many of the objeetions which have heretofore existed in devices of this character are eliminated.

With these and related objects in view, my invention consists in the parts, combinations and improvements hereinafter set forth and claimed.

My present 'invention relates particularly to an improved arrangement of the wheel axles in their mountiiigwith relation to the casing. Heretofore, a common practice has been to provide a. Aspring axle for the wheels which is rigidly held at its center, the spring of the axle between the center and the ends thereof permitting the wheels to yield so that the brush may be brought into closer contact with the carpet. A, construction of this sort, while effective if the very best quality of spring steel can be Yobtained and used for the axles, is unsatisfactory because it is not practical to obtain such material except at high cost, and even their the extent of yieldingor give of the spring axles will vary considerably in the case of different axles. Greatly improved effects can be pro duced and at the same time cheaper` material can be used for the axles when the axle is made from a rigid bar, which may be of very cheap material, and spring pressure is .applied thereto by means of a separate spring, which may conveniently have the form of `a leaf spring, and it is to the improvement of this specification,

devices of this character that my yinvention is directed.

For a more complete understanding of my invention, reference is hereby made to the accompanying drawings forming a part of in which-the same reference numerals are used throughout for the designation of the 4'same parts, and whereinw* l 4 Figure 1 is a transverse cross-sectional view of my improved carpet sweeper, and

Iig. Q is a cross-sectional view taken on a plane at right angles to that on which Fig. 1

lis taken. n

` In a` device constructed in accordance with my improvement, the axlesv 1 pass through enlarged openings 2 in the end of the casing 3. The wheels are rotatably mounted at the I outer ends ofthe axles. Spring means is provided between the ends of the casing,

preferably midway thereof, to normally hold the axles downwardly and inwardly against the tire4 on the brush shaft, but which will yield when pressur'e is applied as by 'pressing the sweeper down upon the carpet by means of its handle. The form of spring means which I have illustrated, and which I prefer to use for this .purpose,comprises a spring 4 having a straight portion 5 which has a slot 6 at its end to receive the axle, the axle being notched at 7 so as to present a square section at the point where it enters the slot G in thespring, thereby preventing the rotation thereof, 'and the spring t being given a sidewise bend S adjacent to Athe straight portion 5, being then bent reversely as shown at 9 to form a portion 10 extending substantially at right angles to the straight section 5. Thel 'provision of a U-shaped bend in the spring formed in the manner above described affords great resiliency in the direction in which pressure is applied in the use of the sweeper. The spring may be attached to the interior of the casing by any convenient means such as a screw 11 which may conveniently pass'through the section 10 of the spring l and which is preferably passed through a metal reinforce 12 on the interior of the casing. course. that springs of other forms may be used for this purpose, but I prefer to use the form shown, as it is cheap and easily constructed and very efficient in its operation. Having now described my invention,-I claimz' 1. In a carpet sweeper, a casing having apertures in its ends, a pair of substantially It` is apparent, ofv

rigid axles passing through the apertures A and extending beyond the ends of the casing, wheels on the axles at their ends and springs connecting .the axles and the casing and protially as set forth` a square section vvher'e they. enterthesa'id slots to prevent rotation thereof, substan- .2. ln'a carpet sweeperathe combination vvlth.` the `caslng havin apertures for the passing ofthe axles, o a pair ofsubstan- 4.tending .upwardly and outwardly i'rromthe respective axles, the said springs comprising 'straight sect-lons -ext'endlng substantially at v st lbstantially as Aset forth..

4tially rigid axles passing through said apertures, and having Wheels rotatably.' mounted thereon at thelr endsvysprings for conneeting the sald axles to thesweeper casing and ex-` right angles to the axles Aand sections of Ul shape at theends of the straight sections and .means for 'Connecting one of the legs ofthe Ul shaped portion of each spring tothe casing,

3. In.. a carpet sweeper, the.4 combination with the casing having apertures. for the passage .of the axles, oia 'palr"ofsuhstan-l tially rigidaxles passing through said apertures, and having Wheels rotatably mounted thereon at their-vends, springs for connecting thesaid axles to the sweeper casing and 4 exrespective axles,`,the said springs-comprising squared sections-.Where they enter the said 'slots to preventf'rotation th-ereof, substan tially as set forth.:

This .specification STEPHEN AQ'DAvIs.

Witnesses lVILLIAM -I-I'.. LEWIS, ARTHUR BfrCrIAlsE.

2'5 tending upWardlyand-'outvvardly from their 

